CM-12-12-258ROUND ROCK, TEXAS
PURPOSE PASSION. PROSPERITY
Item Caption:
C,M—z _, 2_ Zs 8
DEC 0 5 2012
City Manager Approval Form
Consider executing Quantity Adjustment/Change Order No. 1 with Austin Filter System for the Onion
Branch Bank Stabilization Project.
Approval Date: December 7, 2012
Department Name: Utilities and Environmental Services Department
Project Manager:
Lance Shellenberger
Assigned Attorney:
Steve Sheets
Item Summary:
The Onion Branch Bank Stabilization Project extends from U.S. Highway 79 to near the confluence with Brushy Creek and has
experienced some severe erosion problems due to increased flows in recent years. The existing conditions of the banks have
eroded to the point of placing the City's existing water, wastewater and storm water infrastructure in jeopardy. During
construction and revegetation to protect the banks from future erosion, a significant rainfall event occurred and it was
determined that additional erosion control measures were needed to limit construction site runoff.
Change Order/Quantity Adjustment (CO/QA) No. 1 is for approximately 75 feet of mechanically -stabilized earth (MSE) Wall to
lessen the steepness of the slope on the west side of the channel and help ease the maintenance burden. Additional rock was
placed to armor the exposed slope at the end of the wall near the channel bottom to protect it from future erosion. Rock was
also needed for Grade Control Structure # 1 to cover and protect an existing trench cap on a City water line. An additional 14
days was added onto the contract time to allow for this work. This CO/QA No. 1 in the amount of $48,818.11 will change the
original contract amount from $587,087.80 to a total of $635,905.91.
No. of Originals Submitted: 2
Project Name: Onion Branch Bank Stabilization
Cost: $48,818.11
Source of Funds: General Self -Financed Construction
Source of Funds (if applicable): Select Source Fund
Account Number: DR020NI
Finance Director Approval: LO for C. Delaney
Department Director Approval: Michael Thane
Date: 12-05-12
Date: 12/3/2012
CIP I7 I Budget n Purchasing n n Accounting n
N/A OK N/A OK N/A OK N/A OK
ITEMS WILL NOT BE PLACED ON THE COUNCIL OR CM AGENDA W/OUT PRIOR FINANCE AND/OR LEGAL APPROVAL
REV. 6/20/11
Contract Quantity Adjustment/Change Order
ROUND ROCK. TEXAS
Department: Utilities & Environmental Services
Project
Name: Onion Branch Bank Stabilization
City Project
ID Number: DRO2ONI
Justification
Date:
Change Order/Quantity
Adjustment No.
11/26/2012
1
75 feet of MSE Wall was added to lessen the severity of channel slope, which in turn necessitated additional sod.
Additional rock was needed on Grade Control structure #1 to protect an existing concrete trench cap on an existing 12" waterline.
After a rain event during construction, it was determined that extra erosion control measurees were needed to limit
construction site run-off.
SUMMARY
Original Contract Price:
Previous Quantity Adjustment(s):
This Quantity Adjustment:
Total Quantity Adjustment(s):
Total Contract Price with Quantity Adjustment(s):
Previous Change Order(s):
This Change Order:
Total Change Order(s) To Date:
Adjusted Contract Price [Original Contract Price Plus
Quantity Adjustment(s) Plus Change Order(s)]:
Difference between Orginial and Adjusted Contract Prices:
Orginial Contract Time:
Time Adjustment by previous Quan. Adj./Change Order:
Time Adjustment by this Quan. Adju./Change Order:
New Contract Time:
Prepared
Contractor:
City Project
Manager:
Sig :t
ir
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r..
Amount
$587,087.80
$0.00
$42,625.42
$42,625.42
$629,713.22
$0.00
$6,192.69
$6,192.69
$635,905.91
$48,818.11
14 Calendar Days
Submitted for Approval •
inted Name, Title, Company
Mark
• r . - - - • -
D/o Change
0
1.05%
1.05%
11 -a?7'/1
Date
11 3oi-.
ignat
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• otayer/Ci
Manager:
Signature
Printed Name, Title, Company Date
LC444G2. La( enit6eilif
Print-. Name, Title, Company
Signature
Project Name:
Quan. Adj./Change Order No.:
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Date
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Name, Title, Company Date
Change Order Data
Item#
Item Description
Unit
QtY
Unit Price
Amount
Contract Time Adjustment
(Days)
Silt Fence
LF
575
$2.00
$1,150.00
MSE Wall re- work
$3,070.14
Rock Rip Rap
$1,972.55
TOTALS:
$6,192.69
Quantity Adjustment Data
Bid Item #
Item Description
Unit
Qty
Unit Price
Amount
Contract Time Adjustment
(Days)
4
Item SP639 Rock Berm,
Severe Service
LF
78
$35.00
$2,730.00
15
Item SS698-A. Grade
Control Structure No. 1
CY
13.33
$74.00
$986.42
21
Item SS695-C. West
Bank MSE Wall
SF
750
$41.50
$31,125.00
14 Calendar Days
22
item SPb02-A. "Eco"
Hybrid Buffalo Grass,
Block Sodding
SY
973
$8.00
$7,784.00
TOTALS:
$42,625.42
14 Calendar Days